Boring-machine



BORING MACHINE.

APPLICATION ,FILEAD APR.2-I. 1917.

1,33 1,949. I Patented Feb. 24, 1920.

[ 2 SHEETS-SHEET l- I G. BALDWIN.

BORING MACHINE.

APPLICATION FILED APILN. 1911.

1,331,949. Patented Feb. 24,1920.

. 2 SHEETS-SHEET 2. F I 5 r5.

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. Be it vknown that I, GEORGE improvements- Fig. 6 is an enlarged-detailed view of the f 'alinesrwith the tube the drive shaft which wil'l 'be' more hereinafter described. Journaled in i the supporting plug 'fi'tt'ed inthe upper 'en'dfo UNITED STATES OFFICE-1 n, MONTANA, AssIGnonor ONE-THID;T.O,E1WQBD mmscnn aor DELL, MONTANA. r

enonen- BALDW N, or n VYBORINGLMACHINE;

Tb all wk-omit may concem:

BALDWIN, a citizen of the United States, residing at Dell, in'the county of Bea-verhead I State of Montana, have invented certain new and useful Improvements in BoringeMachinesg,

and I do hereby declare the following to be a full; clear, and exact description otthe invention, such as w' ll enable others skilled in the art to which it appertains to make and use the same. f Y

This invention relates to new and usetu'l principal object of the in-ventionre'sides in the provision of a" device which is particularly adapted for wood boring nd on which the drill is slidably mounted-inorder that the same may be adjusted to bore through various thicknesses.

Another object of the-invention is to provide a device in which thedrin is'mounted ona'vertically sliding carriagewhich is suspended yieldably on suitable spring sus-- pending elements which are adapted to be adjusted so that the tension of the springs may be varied to meet varying? requirements.

A 'stilltfurthe'r object of the invention resides inthe' provision' of a novel means for holding the drill gear. I

With these and other objects in view, the

bit in place 'onthe drive invention consists in the novel combination and arrangement of parts which will be fully set forth in the following Specification and accompanying drawings, in which:

Figure l'is a side view partly in section illustrating the detailed construction of the drill or boring machine;

Fig; 2 is a top plan view of the device; 7 Fig. 3 is a sectional view 'on" line 3-3 of Fig.1; 7 v V,

Fig. 4c is an cnla ged detailed sectional view through one ofthe springs showing the method of adjustment Fig. '5 "is. an enlarged I sectional view 'thro'ugh'fthe chuck; and" i the" standard. a

Referring to the dravvin fSII-designateS Y the base of the device, consisting of a plate having one edge provided with. a binding ae ate-a w re ha i g 1 specifleatibn of Letters Patent.

in 100 "'ng machines, and the comprises flanges informed thereonvwhich are secured to the plate as illustrated in v the drawings. A standard 5is secured insaid socket V Patented Feb.'24,1-92'0. Application met ne, 1917. Seria1No;164,989.

and

extends upward-ly'from the base at right anglee thereto as will be clearly seen upon-reference to the drawings. A guide compris ing a pair of spaced bars 6' is securedto the base 1n the rear of the standard 5' and the upper ends" of said bars are providedwith forwardly extending arms 7 which are pro-. videdat their forward ends withJa loop 8.

This loop 8 surrounds the standard 5Qadja said standard.

a plug 10 provided with a transverse bore-'11 cent its upper end as willbe} clearlyseen upon reference to 1, andserves to brace for the reception of a-suitablebolt or rivet bymeans :of which the plug is secured in vided: with asegment 14 having ratchet teeth for coeperation'with suitable latch mechanism I5 carried by the lever by which the various adjustments are made.

Pivoted between one pair of arms" of the provided with the latch me hanism 15 for cooperation with the teeth of the segment 14 and this lever has secured to its end a con necting rod 1 8 to which is connected an adjustable rod 19 the lower end of which is bifurcated andattached to a suitablerear formed on the carriage as will be more fully hereinafter described.

' The carriage above igna-ted generically by the numeralSZO and a vertic'al tube 21 having formed thereon a bow-shaped frame 22. 'The transversely extending horizontal ,tube' 23 is formed integrally withthe vertical tube and a similartubeor i on the bight; portion of the, bow 22 and 23 for the reception of fully bearings or 'tubes'23 and 24 is a drive shaft 25 having attached thereto a hand wheel 26 A pluralityflot arms 12 are on-t'he. upper endofthe plug and arepro'vided adplug on a:sui-table pivot'pin 16 is a lever'17' referred to is desbearing 24; is ifOllTIed r with the beveled ear of the chuck which will. be more ful y hereinafter described.

Formed atth e lower end of the tube 21'of the frame is an arm 28' provided with an. aperture 29in which the chuck and r0 tating pinion therefor, is mounted. A'suitable ear 30 is formed on the tube 24 while a similar ear "31 is formed on the tube 23. The cars 30 and 31 however, extend in planes at right angles to each other and extend outwardly from their tubes so that their axes are positioned at right angles with relation to each other. Thelowerend of the adjustable rod 19 is connected to theear 31 gage the standard to allow for free vertical movement thereof.

. Rotatably mounted within the bore 29 in the arm'28, is a hub 34 of a pinion 35 which meshes with the gear 27 previously referred top This pinion has secured to its undersidea plate 36-a'nd the plate and-bodyof the pinion form a groovein which the, walls of the :opening 2am seated. 'Aitapered bore .37 extends through 'the pinion 35- f and .hub 34. and fitted in said :bore is a chuck 38 comprising a pair of arms 39 having the jaw members 40 formed at their lower en'ds.

The upper endsof the arms are connected by the apertured bight portion 41 through which a bolt; 42 extends beyond the upper face-of the pinion 35 and is provided with a wing nut -43 by means of which the various degreesof'tightnessmaybe had. The jaw members 40. are adapted to receive the shank of the drill 44 and it will thus be seen that whenthe drive wheel 26 is rotated, the shaft 25 will rotate the gear 27 driving'the pinion 35 and causing the chuck 3.8 to revolve, thereby rotating the drill bit.

In order to yieldably-force the carriage V 20 downwardly into the work, a' spring structure designated generically by the numeral 45 is provided and has one end confnected by means-of a rod 46 to a bracket 47 secured; to the upper horizontal arms 7 of the .rodsZ6. The lower end of the spring structure is connected in any suitable manner to the ear 30 and'itwill thus beseenthat, 'the rear end of the carriage will be yieldably forced downwardly towardthevwallsi The forward end of said carriage is forced downwardly by a spring structure designated by the numeral- 45* which is.v constructed in a manner similar to the spring structure above mentioned.

: The jsp ,'.'ng' structures and .45 hereinbeiorezreferred to'fare best'illustrated' in Fig.

thumb screws of thezfeed-springs.

threaded which screws have swivellycon- -nected to their inner ends-suitablegear wheels 53 which mesh with the teetl1-. -48 on the bars 47 and assist in holding the plates 46 and' 49in spaced relation.

Supported on the pivot pin-16-between the standards l2'opposite those inwhich the lever is pivoted is a block 54 provided with a depending ofi -set extension 55 havinga roughened face 56-and a slot 57.; 'A' plate 58 provided with a roughened face is slotted in a similarinanner as the extension55 and a bolt 59 passes through the slotsand holds the plate in various adjusted positions on the extension. The lower end ofthe plate extends downwardlyand is providedwith a connection by which it is attached-to the feed spring'45. A loop-60 is pivot'a-lly connected to'the handle of the lever 17 and serves to hold the-pawl'out of the segment when the device is in operation. a

It Wlll be apparent from the foregoing,

that in use the handle of the lever is pulled downwardly thereby rocking the same on itsplvot so as to raise the carriageQOand move the drill 44-and theoperatingmechanism thereof upwardly.- The workis then placed beneath the drill and the pawl car- .105 ried by the lever is released to allow the handle of the ,lever to; move upwardly and the carriage downwardly until the drill engages the work after which the loop 60 is attached'tothe hand grin so as-to holdv the pawl out of contact with the segment and the handwheel 26 is then turned thus'fsetting the drill in operation. The feed springs 45 and 45 will force the carriage downwardlyand simultaneously force the drill into the work'and the speed of-movement of j the carriage is varied by adjustment of. the

It will be understood that "should itbe so desired. a belt which may be connected to 1120" any suitable drivingmeansmay be passed around the hand wheel 26'0r a-pulley may be substituted in lieu of the hand wheel without departing from the spirit and scope of this invention to enable the device to be; power operated. P V

While in the foregoing there hasFbeen shown'and described the preferred embodimentot this'invention, it -is"t'o"be' 'und er-.

stood-that such; changes may be mad'e in the 1.3;)

the brace, brackets connected with the stand- POSltIOIlGCl tending from the 'base and provided with combination and arrangement of partas I will fall within the spirit and scopeof the appended claims.

What is claimed is: 1. A device of the character described comprising a. base, a standard extending vertically from said base, standard extending vertically from the base, a frame slidably'mounted upon the standard and extending in operative relation to ard and brace, spring elements between the brackets and frame for normally holding the frame in a lowered position, each of the spring elements comprising a base connected with the frame, armsv exteeth forming rack bars of said arms, a yoke connected with the brackets and having openings through which said arms pass, a

spring positioned betweenthe arms and having its upper end engaging the yoke and its lower end engaging the base threaded stems extending through threaded openings formed in the yoke,- and pinions rotatably carried by the inner end portions of the stems and engaging the teeth of said arms and constitutingbrake elements, drill carrying means carried by the, frame for rotary a brace for said movement, and actuating means carried by the frame for imparting rotary movement to Y the drill carrying means.

2. A device of the character described comprising a slidably mounted frame, drill carrying means rotatably 'carried by the frame, actuating means carried by the frame for imparting rotary movement to the drill carrying means, and resilient means for normally retaining the ,drill carrying frame in a lowered position and comprising 40 v a stationary support, a yoke carried by the support and having side housings, a base connected with the slidably mounted frame, rack bars extending from the base and extending through openings formed in the yoke between the side housings, a spring element positioned between the rack bars and engaging the yoke and base, threaded stems carried by the side housings, and pinions r0 tatably carried by the stems and engaging the teeth of the rack bars constituting elements. I v

In testimon whereof I affix my signature in presence 0 two witnesses.

t j GEORGE BALDWIN. 'Witnesses: g ALBURTUs G. WILLIAMs, ROBERT W. BooNE.

brake 

